| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 151 (High) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 199 (Very high) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 17 |
| February | 793 (Very high) | 0 (Low) | 26 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 392 (Very high) | 1 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 12 (Low) | 24 |
| March | 180 (High) | 300 (Very high) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 121 (Very high) | 6 (Low) | 17 (Medium) | 138 (Very high) | 1 (Low) | 9 (Low) | 1 (Low) | 28 (Medium) | 15 (Medium) | 54 |
| April | 23 (Low) | 88 (Medium) | 20 (Low) | 9 (Low) | 2 (Low) | 24 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 15 (Medium) | 8 (Low) | 401 (Very high) | 1 (Low) | 32 (Medium) | 20 (Medium) | 3 (Low) | 355 (Very high) | 2 (Low) | 15 (Medium) | 13 (Low) | 67 |
| May | 11 (Low) | 1 (Low) | 94 (High) | 27 (Medium) | 191 (Medium) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 5 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 149 (Very high) | 0 (Low) | 6 (Low) | 335 (Very high) | 26 (Medium) | 16 (Medium) | 5 (Low) | 68 |
| June | 2 (Low) | 0 (Low) | 57 (Medium) | 13 (Low) | 83 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 7 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 10 (Low) | 40 (Medium) | 5 (Low) | 0 (Low) | 10 (Low) | 22 |
| July | 3 (Low) | 0 (Low) | 15 (Low) | 21 (Medium) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 28 (Medium) | 6 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 42 |
| August | 6 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 38 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 15 |
| September | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 11 |
| October | 15 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 |
| November | 42 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 |
| December | 24 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 5 |